Release Kinetics of Boron in Acidic Soils as Affected by Calcium Form Different Sources

Boron (B) release mechanism is vital in supplying available B, particularly in acidic soils, because a temporary B deficiency can be triggered when liming the soil. This research was conducted with the aim at elucidating the role of Ca on B release kinetics in three acidic soils of Thailand to ascer...

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Bibliographic Details
Published in:Applied and environmental soil science 2024-11, Vol.2024
Main Authors: Bowichean, Roongnapa, Bell, Richard William, Cheng, Miaomiao, Thanachit, Suphicha, Anusontpornperm, Somchai
Format: Article
Language:English
Subjects:
Acidic soils
Adsorption
Analysis
Availability
Boron
Calcium chloride
Cassava
Dietary minerals
Diffusion rate
Kinetics
Limestone
Liming
Nutrient deficiency
Nutrient release
Organic matter
Organic soils
Plant growth
Plant layout
Power plants
Product introduction
Soil acidity
Soil analysis
Soil chemistry
Soil lime
Soil organic matter
Soil pH
Soils
Taxonomy
Topsoil
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Summary:Boron (B) release mechanism is vital in supplying available B, particularly in acidic soils, because a temporary B deficiency can be triggered when liming the soil. This research was conducted with the aim at elucidating the role of Ca on B release kinetics in three acidic soils of Thailand to ascertain the kinetic release of B as affected by added calcium (Ca) from two sources: ground limestone (GL) and calcium chloride (CaCl[sub.2]). Topsoil samples were incubated with either GL or CaCl[sub.2] at 0, 0.5, 1.0, or 1.5 times of the lime requirement for 7days; thereafter, the soil pH and the kinetics of B release were analyzed based on successive extractions with 0.01M CaCl[sub.2] solution for 72h, which was comparatively described using four kinetic models: Elovich, parabolic diffusion, power function, and first-order of which each model would differently provide unique insights into the kinetic release of plant nutrient from soil. The added Ca significantly affected B release into the soil with the release kinetics of B in the two-time segments only conforming to the power function model in which approximately 70% of B was released rapidly during the initial phase and the rest was in a slow-release phase later on. Compared at the same rates of Ca applied, CaCl[sub.2] accelerated more B release than GL with no statistical difference in some soils. This was directly impacted by a decrease in soil pH as significantly caused by the addition of CaCl[sub.2]. In addition, the B release rate significantly correlated with soil organic matter (r=0.699[sup.∗∗], p
ISSN:1687-7667
1687-7675
DOI:10.1155/aess/6418954